Re: Store channel specification in profile

[zimoun <zimon.toutoune@gmail.com>]

Hi Ludo,

On Mon, 24 Feb 2020 at 17:16, Ludovic Courtès <ludo@gnu.org> wrote:

> > ;; Thanks to Ivan Vilata-i-Balaguer for this:
> > (define (guix-commit)
> >   (let ((guix-manifest (profile-manifest (string-append (getenv "HOME") "/.config/guix/current"))))
> >     (match (assq 'source (manifest-entry-properties (car (manifest-entries guix-manifest))))
> >       (('source ('repository ('version 0) _ _
> >                              ('commit commit) _ ...))
> >        commit)
> >       (_ #f))))
> >
> > (match (command-line)
> >   ((_ where)
> >    (format #t ";; commit: ~a\n" (guix-commit))
> >    (pretty-print
> >     `(specifications->manifest
> >       ',(guix-manifest where))))
>
> Emitting channel info as comments like this, and/or a warning when
> there’s a conflict (packages coming from different commits of the same
> channel) could be done as a second step.

The snippet uses the last commit of "guix pull", right?
Or the commit of last installed package with "guix package -i"?

Even if it can be done as a second step, the commits of each installed
packages are IMHO the key point of the exporter. Because otherwise, I
am doing "guix package -I | cut" and I am almost done.

Cheers,
simon